I sincerely hope you're not implying that a complex set of socio-cultural behaviors and contingent attitudes and practices (generally summed up as "being explorers") are not passed on seamlessly and unchanged through a certain Y-DNA haplogroup, especially when you yourself say that those first R1b tribes were most probably very different, autosomally and even in terms of Mt-DNA distribution, to any modern Europeans (and West Asians, I'd add). That kind of thinking would really make seriously doubt your reasons for all these hypotheses and, more than that, your actual knowledge on this subject.
I know Y DNA doesn’t encode for much given its relatively low mutation rate, which is necessary if it’s to be passed down virtually unchanged from father to son. Selection through the Y chromosome can take place, but it’s going to be a lot rarer than in autosomal chromosomes. I don’t at all think they were explorers because they were R1b, just that there is a correlation between the R1b tribes and that lifestyle. I didn’t mention anything of a genetic component, though I do believe it has over time been somehow selected for. But looking at the history of R1b and R1 tribes in general, can you argue against it?
Also, addressing previous points:
SHG received their light pigmentation from their partial EHG ancestry. As for GAC being so blonde - that one really stumps me, as I think it does everyone. Regardless, there is clearly a correlation between R1b tribes and rufosity - and no, I don’t believe this genetic component is encoded within the Y chromosome! Yamnaya being dark pigmented is unexpected to me, but if this really was the case (as the DNA suggests), I put this down to the CHG these R1b guys must have picked up on their way to the Steppe. I again would have thought there would have been lots of red hair amongst Yamnaya - in fact I am extremely confident of this, but ancient DNA doesn’t seem to be great at picking up red hair for some reason (one example - the British Beakers barely have any red hair, yet are said to have almost entirely replaced the previous Britons to match almost perfectly modern Briton ancestry, which we know to have a lot of red hair). End of story though - there is a very ancient connection, that is evident through examining distributions, between R1b tribes and red hair.
As to the doubt of R1b-folk being involved in some form of hierarchy, I think you’re forgetting what happened in Yamnaya, and later during its expansion into Europe. Check out the Insular Celtic Y DNA profile. Also, and you haven’t fully commented on this, Ramses II DID have red hair, and he almost certainly had pretty fair skin too (or at least I could never imagine someone with red hair and dark olive skin, as the Egyptian portraits suggest his skin would have been).
As for the Swastika - there is a clear correlation with R1 people going back all the way to the Paleolithic Ukraine, but I agree that at the end of the day it is just a symbol, and plenty of non-IE people have used it. My hypothesis starts out with pre-proto-IE though, but I get your point.
And as for the Americas - surely you can see it can’t be a coincidence that they happened to develop the exact same symbol. They clearly saw it from somewhere, and it’s unlikely to be from across the Bering Strait given the earliest in the Americas are actually in South America iirc, but there’s always that possibility - but then the Swastika would have to be ******* old (Ma’lta-ish old).
How do you personally explain the clear Caucasoid red hair on Peruvian mummies though? That is a minor point to everything I believe in, but it’s by far the most fantastical, and if it’s true, the element of disbelief before evidence should be taken away from consideration.